From 2eeb09fe1c5173b659929f92fee4461796ca8c14 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 4 Dec 2025 13:11:49 -0300 Subject: [PATCH] libperf: Use 'extern' in LIBPERF_API visibility macro Use 'extern' on LIBPERF_API to address this issue that started appearing with gcc 15, first seen in ubuntu 25.10: evlist.c: In function 'perf_evlist__purge': evlist.c:202:17: error: implicit declaration of function 'perf_evsel__delete'; did you mean 'perf_evsel__exit'? [-Wimplicit-function-declaration] 202 | perf_evsel__delete(pos); | ^~~~~~~~~~~~~~~~~~ | perf_evsel__exit evlist.c:202:17: error: nested extern declaration of 'perf_evsel__delete' [-Werror=nested-externs] evlist.c: In function 'perf_evlist__open': evlist.c:261:23: error: implicit declaration of function 'perf_evsel__open'; did you mean 'perf_evsel__exit'? [-Wimplicit-function-declaration] 261 | err = perf_evsel__open(evsel, evsel->cpus, evsel->threads); | ^~~~~~~~~~~~~~~~ | perf_evsel__exit evlist.c:261:23: error: nested extern declaration of 'perf_evsel__open' [-Werror=nested-externs] Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Namhyung Kim --- tools/lib/perf/include/perf/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/perf/include/perf/core.h b/tools/lib/perf/include/perf/core.h index a3f6d68edad76..06cc132d88cf3 100644 --- a/tools/lib/perf/include/perf/core.h +++ b/tools/lib/perf/include/perf/core.h @@ -5,7 +5,7 @@ #include #ifndef LIBPERF_API -#define LIBPERF_API __attribute__((visibility("default"))) +#define LIBPERF_API extern __attribute__((visibility("default"))) #endif enum libperf_print_level { -- 2.47.3